The dimensional formula of B²/2₀ is . . . . . . .

Correct Answer is : M1L−1T−2M¹ L^{-1} T^{-2}M1L−1T−2

Correct Answer is : M1L−1T−2M¹ L^{-1} T^{-2}M1L−1T−2

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GUJCET 2026 Physics Paper

Question : 1 of 40

Marks: +1, -0

\frac{B^2}{2\mu_0}

is . . . . . . .

Solution:

Concept:

The quantity

\frac{B^2}{2\mu_0}

represents magnetic energy density.

Explanation:

Magnetic energy density is energy stored per unit volume.

Dimensional formula of energy is

[M L^2 T^{-2}]

Dimensional formula of volume is

[L^3]

So, magnetic energy density

= \frac{[M L^2 T^{-2}]}{[L^3]} = [M L^{-1} T^{-2}]

This matches option A.

Answer:

[M L^{-1} T^{-2}]

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